Claude Fable 5.1 API AI Agent

Claude Fable 5.1 Pricing

An AI agent workload (50K input + 5K output tokens, 100 tasks/day) costs approximately $949.55/month on Qubax.

Why use Claude Fable 5.1 for AI agents on Qubax?

• 🤖Autonomous agents that call APIs and external tools
• 🤖Multi-step reasoning for complex task completion
• 🤖Agent orchestration with LangChain, CrewAI, or custom frameworks
• 🤖Function calling for structured, reliable agent responses

About Claude Fable 5.1

Claude Fable 5.1 improves on Claude Fable 5 across the board, with the biggest gains in agentic coding, long-running agentic workflows, and knowledge work: long code refactors, front-end and visual... It supports a 1M-token context window and up to 128K output tokens per request. Native capabilities include reasoning, vision, tool calling, structured output, streaming. On Qubax it is served by 78 independent sellers, so pricing stays competitive and uptime stays high.

Claude Fable 5.1 AI Agent — code example

from openai import OpenAI
import json

client = OpenAI(
    base_url="https://api.qubax.ai/v1",
    api_key="qbx_live_YOUR_KEY",
)

tools = [{
    "type": "function",
    "function": {
        "name": "get_weather",
        "parameters": {"type": "object", "properties": {"city": {"type": "string"}}},
    },
}]

resp = client.chat.completions.create(
    model="claude-fable-5.1",
    messages=[{"role": "user", "content": "What's the weather in Tokyo?"}],
    tools=tools,
)
call = resp.choices[0].message.tool_calls[0]
print(json.loads(call.function.arguments))  # -> {"city": "Tokyo"}

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Claude Fable 5.1 AI Agent FAQ